inductiveUnivErrorMsg.lean:2:0-2:20: error: Constructor field `Foo` of `Bar.foobar` contains universe level metavariables at the expression
  Sort ?u
in its type
  Sort ?u
inductiveUnivErrorMsg.lean:6:0-6:27: error: Constructor field `Foo` of `Bar2.foobar` contains universe level metavariables at the expression
  Sort ?u
in its type
  Sort ?u